6-4 Troubleshooting6.3 While OperatingPROBLEM PROBABLE CAUSE POSSIBLE SOLUTIONWhen using thespeakerphone with aproprietary telephoneKX-T7330 nothing isheard.The unit does not ring.During a power failure,the extension connectedto jack number 01 or 09does not operate.Making an outside callcannot be performed.A tone type single linetelephone (SLT) usercannot make a call.The HANDSET/HEADSETselector on the KX-T7330is set to the “HEADSET”position.The Ringer VolumeSelector is set to “OFF”.A proprietary telephone isconnected to the jack.The corresponding CObutton does not exist on theproprietary telephone.There may be somethingwrong with a DTMFreceiver.When the headset is not used, set theHANDSET/HEADSET selector to the“HANDSET” position.Set to “HIGH” or “LOW”.Disconnect the proprietary telephoneand connect a single line telephone.Program the CO button. See theFlexible Button Assignment.(+ Operating Instructions,1.2 Proprietary Telephone Settings,“Customizing the Buttons on YourTelephone”)1. Select “Enable” for DTMF receiver 1and “Disable” for DTMF receiver 2 inprogram [107].2. Make a call using a tone type SLTconnected to one of extension jacks01–08.3. If you cannot make the call, theproblem may have been caused byDTMF receiver 1. If the call can bemade, go to step 4.4. Try DTMF receiver 2. Select“Disable” for DTMF receiver 1 and“Enable” for DTMF receiver 2 inprogram [107], and make another call.If you cannot make the call, theproblem may have been caused byDTMF receiver 2. If the call can bemade, go to step 5.5. Check the other 4 DTMF receivers inthe same way. Refer to program[107].
